Isku-dhafka iyo sifooyinka iftiinka ee ether cellulose-ka-milmi kara biyaha / EU (III)

Biyo dardaro -Soluble cellulose ether / EU (III) oo leh waxqabadka iftiinka, kuwaas oo ah, carboxymethyl cellulose (CMC) / EU (III), methyl cellulose (MC) / EU (III), iyo Hydroxyeyl cellulose (HEC) / EU (III) wuxuu ka hadlayaa qaab dhismeedka dhismayaashan waxaana xaqiijiyay FTIR.Muujinta spectrum ee walxahan isbarbar socda waa EU (III) oo ah 615nm.Kala-guurka korantada korantada (oo ah 5D0→7F2).Beddelka CMC wuxuu saameeyaa spectrum fluorescent iyo xoogga CMC/EU (III).Waxa ku jira EU (III) sidoo kale waxay saamaysaa xoogga dhaadheer ee kakan.Marka EU (III) ka kooban yahay 5% (mass ratio), xoogga fluorescent ee kuwan biyaha-cellulose ether EU (III) ee u dhigma ayaa gaadhay ugu badnaan.

Erayada Furaha biyaha - ether cellulose milmay;Midowga Yurub (III);isku mid ah;dhalaalaya

1.Hordhac

Cellulose waa makrometer toosan oo ka mid ahβ-D unugga gulukooska ee ku xiran (1,4) khamriga.Sababtoo ah la cusboonaysiin karo, biodegradable, bioocompatibility, daraasadda cellulose waa sii kordheysa Inta badan ee la daawado.Cellulose waxa kale oo loo istcimaalaa isku-xidhka indhaha, korantada, magnetic, iyo waxqabadka kicinta sida koox-rasmi ah oo badan oo alkyr oxygen ligand ah.Y.OKAMOTO iyo la-hawlgalayaashi waxay daraasad ku sameeyeen tijaabooyinka diyaarinta iyo codsiyada ka kooban polymers-ka birta ah ee naadirka ah ee dhulka.Waxay arkeen in kombuyuutarka CMC/TB ee isku-habboon uu leeyahay wareeg xoog leh oo folaorescent ah.CMC, MC, iyo HEC, sida ugu muhiimsan uguna badan ee loo isticmaalo biyaha cellulose -cellulose milmaya, ayaa helay fiiro gaar ah sababtoo ah waxqabadkooda milanka wanaagsan iyo qiimaha codsiga ballaaran, gaar ahaan tiknoolajiyada calaamadaynta fluorescent Qaabdhismeedka cellulose ee xalka aqueous waa mid aad u badan. waxtar leh.

Maqaalkani waxa uu soo tebinayaa taxane biyo ah -cellulose ether-ka-milmi kara, kuwaas oo ah diyaarinta, qaab-dhismeedka iyo guryaha fluorescent ay sameeyeen matomoid ay sameeyeen CMC, MC iyo HEC iyo EU (III).

2. Tijaabi

2.1 Qalabka tijaabada ah

CMC (shahaadada beddelka (DS) waa 0.67, 0.89, 1.2, 2.4) iyo HEC waxaa si naxariis leh u bixiya KIMA CHEMICAL CO., LTD.

MC (DP=450, viscosity 350~550mpa·s) waxaa soo saaray KIMA CHEMICAL CO.,LTD.Eu2O3 (AR) waxa soo saara warshada Kiimikada ee Shanghai Yuelong.

2.2 Diyaarinta CMC (HEC, MC) /Eu (III) isku dhafan

EuCl3·Xalka 6H2O (xalka A): ku milmi Eu2Os 1: 1 (saamiga mugga) HCI oo ku milo 4. 94X 10-2 mol/L.

CMC/Eu(III) nidaam adag oo adag: Kala diri 0.0853g ee CMC oo leh DSs kala duwan oo biyo ah, ka dibna ku dar tirada Eu (III) hoos u dhigista xalkeeda aqueous, si saamiga cuf ee CMC: Eu (III) uu yahay 19: 1. Walaaq, reflux ilaa 24 saacadood, uumi-baxa rotary si uu u engego, faakiyum engegan, shiid budo leh hoobiye agate.

CMC (HEC, MC/Eu(III) nidaamka xalinta aqueous: Qaado 0.0853 g CMC ah (ama HEC ama MC)) muunad oo ku milmi H2O, ka dibna ku dar xaddi kala duwan oo xal A (si aad u diyaariso kala duwan Eu(III) isku dhafan. ), walaaqay, kululeeyay dib-u-soo-noqod, loo raray qadar go'an oo weel mug leh, oo lagu daray biyo nadiif ah si loo milo calaamadda.

2.3 spectra fluorescence ee dhismayaasha CMC (HEC, MC) /Eu(III)

Dhammaan nidaamyada aqueous adag waxaa lagu cabbiray RF-540 fluorescence spectrophotometer (Shimadzu, Japan).Nidaamka gobolka adag ee CMC/Eu(III) waxaa lagu cabiray Hitachi MPE-4 fluorescence spectrometer.

2.4 Fourier oo beddela spectroscopy infrared spectroscopy of CMC (HEC, MC) /Eu(III)complexes

FTIR IR ee dhismaha waxaa lagu xoojiyay Aralect RFX-65AFTIR waxaana lagu riixay kiniinnada KBr.

3. Natiijooyinka iyo doodaha

3.1 Samaynta iyo qaab-dhismeedka CMC (HEC, MC) /Eu(III)

Sababo la xiriira isdhexgalka korantada, CMC waxay ku jirtaa dheellitirka xalka aqueous-ka ah, masaafada u dhaxaysa silsiladaha molecular ee CMC waa mid fog, xoogga labada dhinacna waa daciif.Marka Eu (III) lagu daro hoos udhaca xalka, silsiladaha molecular ee CMC ee xalka Qalabka qaabeynta ayaa dhamaantood isbedelay, dheelitirka korantada ee xalka bilowga ah waa la burburiyaa, silsilada molecular CMC waxay u egtahay inay duuduubto.Marka Eu (III) la isku daro kooxda carboxyl ee CMC, booska isku xirnaanta waa random (1:16), Sidaa darteed, xalka aqueous dilute, Eu (III) iyo CMC ayaa si aan kala sooc lahayn loola xiriiriyaa kooxda carboxyl ee silsiladda, iyo Xidhiidhkan random ee u dhexeeya Eu(III) iyo silsiladaha molecular ee CMC waa mid aan u fiicnayn sii daynta fluorescence ee xooggan, sababtoo ah waxay ka dhigaysaa qayb ka mid ah booska chiral-ka.Marka xalka la kululeeyo, dhaqdhaqaaqa silsiladaha molecular ee CMC waa la dedejiyaa, masaafada u dhaxaysa silsiladaha molecular ee CMC waa la gaabiyey.Waqtigan xaadirka ah, isku xidhka u dhexeeya Eu (III) iyo kooxaha kaarboxyl ee u dhexeeya silsiladaha molecular CMC waa sahlan tahay in la sameeyo.

Isku xidhkaani waxa lagu xaqiijiyay qaabka CMC/Eu(III) FTIR.Isbarbardhigga qalooca (e) iyo (f), 1631cm-1 ugu sarreysa qalooca (f) wuu daciifayaa (e), iyo laba sare oo cusub 1409 iyo 1565cm-1 ayaa ka muuqda qalooca (e), kuwaas oo ah COO - Base vs iyo vas, taas oo ah, CMC/Eu(III) waa walax milix ah, iyo CMC iyo Eu(III) waxa inta badan ku xidhan curaarta ionic.Qallooca (f), 1112cm-1 ugu sarreysa ee ay samaysay nuugista qaab dhismeedka ether aliphatic iyo nuugista ballaaran ee 1056cm-1 oo ay sababtay qaab-dhismeedka acetal iyo hydroxyl ayaa la cidhiidhiyay sababtoo ah samaynta dhismooyinka, iyo meelaha ugu sarreeya ayaa soo muuqda .Lammaanaha elektarooniga ah ee O atom ee ku jira C3-O iyo labada lammaane ee elektarooniga ah ee O atamka ee ether kama qayb qaadan isuduwidda.

Marka la barbardhigo qalooca (a) iyo (b), waxaa la arki karaa in xadhkaha MC ee MC/Eu(III), haddii ay tahay oksijiinta ku jirta kooxda metoxyl ama oksijiinta ku jirta giraanta gulukooska anhydrous, isbeddel, taas oo muujinaysa. in MC Dhammaan oksijiinnada ay ku lug leeyihiin isuduwidda Eu(III).

3.2 Fluorescence spectra ee dhismayaasha CMC (HEC, MC) /Eu(III) iyo waxyaabaha saamaynta ku leh

3.2.1 Muuqaalka Fluorescence ee dhismayaasha CMC (HEC, MC) /Eu(III)

Maadaama molecules biyuhu ay yihiin kuwo wax ku ool ah demiya fluorescence, xoojinta qiiqa qiiqa ee ion lanthanide guud ahaan waa daciif.Marka Eu(III) ions la isku duwo ether-cellulose-ka biyaha-milmi kara, gaar ahaan molecules-ka polyelectrolyte CMC, qayb ama dhammaan molecules-yada biyaha ee isku-dubbaridan waa laga saari karaa, iyo xoojinta qiiqa Eu (III) ayaa la wanaajin doonaa natiijada.Muuqaalka sii daaya ee dhismayaashan dhamaantood waxay ka kooban yihiin 5D0→7F2 ku beddelka koronto ee Eu(III) ion, kaas oo soo saara ugu sarreeya 618nm.

3.2.2 Qodobbada saameeya sifooyinka iftiinka ee dhismayaasha CMC (HEC, MC) /Eu(III)

Astaamaha ethers-ka cellulose-ka waxay saameeyaan xoojinta fluorescence, tusaale ahaan, dhismayaasha CMC/Eu(III) ee ay sameeyeen DS-yada kala duwan waxay leeyihiin sifooyin fluorescence kala duwan.Marka DS ee CMC aanu ahayn 0.89, spectrum fluorescence spectrum ee kakanaanta CMC/Eu(III) kaliya waxa uu leeyahay ugu sarreeya 618nm, laakiin marka DS ee CMC waa 0.89, gudahood kala duwan ee tijaabo our, adag CMC/Eu ( III) III) Waxaa jira laba ugu sarreeya ee qiiqa daciifka ah ee qiiqa qiiqa, waa kala-guurka magnetic dipole 5D0→7F1 (583nm) iyo kala guurka dipole koronto 5D0→7F3 (652nm).Intaa waxaa dheer, xoojinta fluorescence ee dhismayaashani sidoo kale way kala duwan yihiin.Warqadan, xoojinta qiiqa Eu(III) ee 615nm ayaa la qorsheeyay ka dhanka ah DS ee CMC.Marka DS ee CMC=0.89, xoogga iftiinka ee gobolka adag CMC/Eu(III) ayaa gaaro ugu badnaan.Si kastaba ha ahaatee, viscosity (DV) ee CMC wax saameyn ah kuma laha xoojinta iftiinka dhismooyinka gudaha baaxadda daraasaddan.

4 Gabagabo

Natiijooyinka kor ku xusan waxay si cad u xaqiijinayaan in ka dhismooyinka cellulose ether/Eu(III) ee biyaha ku milma ay leeyihiin sifooyin sii daaya fluorescence.Muuqaalka sii daaya ee dhismooyinkan waxaa ku jira wareejinta dipole koronto ee Eu(III), iyo heerka ugu sarreeya ee 615nm waxaa keenay 5D0→7F2 kala-guurka, dabeecadda ether-ka cellulose iyo waxa ku jira Eu(III) waxay saameyn kartaa xoojinta fluorescence.